Digital credentials - Add/update CI/CD workflow

[argush3]

Use Legal name branch as a reference for CI/CD related updates. Believe we’ve done these updates for most BE services previously. Dissolutions jobs and digital credentials will be new. There will be differences as the legal name changes will no longer be relevant.

TODOs

• [ ] Work in GCP feature branch
• [ ] Add/update CI script as appropriate. May be able to reuse a lot of existing CI script from legal name branch.
• [ ] Verify CI checks out via GH workflows
• [ ] Add/update CD script as appropriate. May be able to reuse a lot of existing CD script from legal name branch.
• [ ] Tweak config as appropriate
• [ ] Verify service is able to be deployed in GCP via CD. Do some basic checks. If there are big issues, cut new ticket(s) to address.

[argush3]

work accounted for in other tickets